/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.measure;
import java.io.*;
import javax.measure.unit.Unit;
import javax.measure.quantity.Quantity;
import javax.measure.converter.UnitConverter;
import static javax.measure.unit.NonSI.DEGREE_ANGLE;
import static org.geotools.measure.Units.*;
import org.junit.*;
import static org.junit.Assert.*;
/**
* Test conversions using the units declared in {@link Units}.
*
* @author Martin Desruisseaux (Geomatys)
*
*
*
* @source $URL$
*/
public class UnitsTest {
/**
* Compares two values for equality.
*/
private static <Q extends Quantity> void checkConversion(
final double expected, final Unit<Q> unitExpected,
final double actual, final Unit<Q> unitActual)
{
UnitConverter converter = unitActual.getConverterTo(unitExpected);
assertEquals(expected, converter.convert(actual), 1E-6);
converter = converter.inverse();
assertEquals(actual, converter.convert(expected), 1E-6);
}
/**
* Checks the conversions using {@link Units#SEXAGESIMAL_DMS}.
*/
@Test
public void testSexagesimal() {
checkConversion(10.00, DEGREE_ANGLE, 10.0000, SEXAGESIMAL_DMS);
checkConversion(10.01, DEGREE_ANGLE, 10.0036, SEXAGESIMAL_DMS);
checkConversion(10.50, DEGREE_ANGLE, 10.3000, SEXAGESIMAL_DMS);
checkConversion(10.99, DEGREE_ANGLE, 10.5924, SEXAGESIMAL_DMS);
}
/**
* Serialize and deserialize the given object.
*
* @param object The object to serialize.
* @return The deserialized object.
* @throws IOException Should never occurs.
* @throws ClassNotFoundException Should never occurs.
*/
private static Object serialize(final Object object) throws IOException, ClassNotFoundException {
final ByteArrayOutputStream buffer = new ByteArrayOutputStream();
final ObjectOutputStream out = new ObjectOutputStream(buffer);
out.writeObject(object);
out.close();
final ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(buffer.toByteArray()));
final Object read = in.readObject();
in.close();
return read;
}
/**
* Tests serialization of units.
*
* @throws IOException Should never occurs.
* @throws ClassNotFoundException Should never occurs.
*
* @todo Disabled for now. Needs JSR-275 fix.
*/
@Test
@Ignore
public void testSerialization() throws IOException, ClassNotFoundException {
assertEquals(DEGREE_ANGLE, serialize(DEGREE_ANGLE));
assertEquals(SEXAGESIMAL_DMS, serialize(SEXAGESIMAL_DMS));
assertEquals(DEGREE_MINUTE_SECOND, serialize(DEGREE_MINUTE_SECOND));
assertEquals(PPM, serialize(PPM));
}
}